Re: [PATCH 3/5] ib_srpt: depend on INFINIBAND_ADDR_TRANS

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On Mon, Apr 30, 2018 at 4:35 PM Jason Gunthorpe <jgg@xxxxxxxx> wrote:

> On Wed, Apr 25, 2018 at 03:33:39PM -0700, Greg Thelen wrote:
> > INFINIBAND_SRPT code depends on INFINIBAND_ADDR_TRANS provided symbols.
> > So declare the kconfig dependency.  This is necessary to allow for
> > enabling INFINIBAND without INFINIBAND_ADDR_TRANS.
> >
> > Signed-off-by: Greg Thelen <gthelen@xxxxxxxxxx>
> > Cc: Tarick Bedeir <tarick@xxxxxxxxxx>
> >  drivers/infiniband/ulp/srpt/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/infiniband/ulp/srpt/Kconfig
b/drivers/infiniband/ulp/srpt/Kconfig
> > index 31ee83d528d9..fb8b7182f05e 100644
> > +++ b/drivers/infiniband/ulp/srpt/Kconfig
> > @@ -1,6 +1,6 @@
> >  config INFINIBAND_SRPT
> >       tristate "InfiniBand SCSI RDMA Protocol target support"
> > -     depends on INFINIBAND && TARGET_CORE
> > +     depends on INFINIBAND && INFINIBAND_ADDR_TRANS && TARGET_CORE

> Isn't INFINIBAND && INFINIBAND_ADDR_TRANS a bit redundant? Can't have
> INFINIBAND_ADDR_TRANS without INFINIBAND.

By kconfig INFINIBAND_ADDR_TRANS depends on INFINIBAND.  So yes, it seems
redundant.  I don't know if anyone has designs to break this dependency and
allow for ADDR_TRANS without INFINIBAND.  Assuming not, I'd be willing to
amend my series removing redundant INFINIBAND and a followup series to
remove it from similar depends.  Though I'm not familiar with rdma dev tree
lifecycle.  Is rdma/for-rc a throw away branch (akin to linux-next), or
will it be merged into linus/master?  If throwaway, then we can amend
its patches, otherwise followups will be needed.

Let me know what you'd prefer.  Thanks.

FYI from v4.17-rc3:
drivers/staging/lustre/lnet/Kconfig:  depends on LNET && PCI && INFINIBAND
&& INFINIBAND_ADDR_TRANS
net/9p/Kconfig:       depends on INET && INFINIBAND && INFINIBAND_ADDR_TRANS
net/rds/Kconfig:      depends on RDS && INFINIBAND && INFINIBAND_ADDR_TRANS
net/sunrpc/Kconfig:   depends on SUNRPC && INFINIBAND &&
INFINIBAND_ADDR_TRANS
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